Li Ke, Liu Jie, Sheng Xia, Chen Liping, Xu Tao, Zhu Kai, Feng Xinjian
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China.
Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois, 60115, USA.
Chemistry. 2018 Jan 2;24(1):89-92. doi: 10.1002/chem.201704944. Epub 2017 Dec 4.
Mesoporous semiconductor films are of considerable interest for applications in photoelectrochemical devices, however, despite intensive research till now, their charge transport properties remain significantly lower than their single-crystal counterparts. Herein, we report a novel low-temperature template-free technique for growing high surface area mesoporous anatase TiO films with a preferred [001] crystalline-orientation on FTO-coated glass substrate. Compared to mesoporous films that comprised of randomly oriented crystallites, the uniaxial orientation enables a 100-fold increase in the rate of electron transport. The uniaxially oriented mesoporous anatase TiO films exhibit should greatly facilitate the development and application of photoelectrochemical and electrochemical devices.
介孔半导体薄膜在光电化学器件中的应用备受关注，然而，尽管迄今为止进行了深入研究，但其电荷传输性能仍显著低于其单晶对应物。在此，我们报道了一种新颖的低温无模板技术，用于在FTO涂层玻璃基板上生长具有择优[001]晶体取向的高表面积介孔锐钛矿TiO薄膜。与由随机取向微晶组成的介孔薄膜相比，单轴取向使电子传输速率提高了100倍。单轴取向的介孔锐钛矿TiO薄膜的出现应极大地促进光电化学和电化学器件的开发与应用。
